GB2383848A - Method for evaluating creep lifetime - Google Patents

Method for evaluating creep lifetime

Info

Publication number
GB2383848A
GB2383848A GB0303077A GB0303077A GB2383848A GB 2383848 A GB2383848 A GB 2383848A GB 0303077 A GB0303077 A GB 0303077A GB 0303077 A GB0303077 A GB 0303077A GB 2383848 A GB2383848 A GB 2383848A
Authority
GB
United Kingdom
Prior art keywords
creep
maximum value
actual machine
microscope
test
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0303077A
Other versions
GB0303077D0 (en
GB2383848B (en
Inventor
Hidetaka Nishida
Hiroshi Yamaguchi
Nobuaki Kosako
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chugoku Electric Power Co Inc
Original Assignee
Chugoku Electric Power Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chugoku Electric Power Co Inc filed Critical Chugoku Electric Power Co Inc
Publication of GB0303077D0 publication Critical patent/GB0303077D0/en
Publication of GB2383848A publication Critical patent/GB2383848A/en
Application granted granted Critical
Publication of GB2383848B publication Critical patent/GB2383848B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/204—Structure thereof, e.g. crystal structure
    • G01N33/2045—Defects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0071—Creep
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/0202—Control of the test
    • G01N2203/0212—Theories, calculations
    • G01N2203/0218—Calculations based on experimental data

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

A part where a creep void is recognized is observed at an arbitrary magnification by a scanning electron microscope, an optical microscope, and a laser microscope, and the maximum value of creep void crystal grain boundary occupancy is measured in the field of view. The maximum value is applied to a master curve corrected from the results of a test of simulating an actual machine and a test piece of actual machine size, taking account of internal damage of the machine. Thus the creep lifetime consumption rate of a member is estimated easily with high accuracy.
GB0303077A 2000-08-16 2000-08-16 Creep life evaluation method Expired - Lifetime GB2383848B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/005470 WO2002014835A1 (en) 2000-08-16 2000-08-16 Method for evaluating creep lifetime

Publications (3)

Publication Number Publication Date
GB0303077D0 GB0303077D0 (en) 2003-03-19
GB2383848A true GB2383848A (en) 2003-07-09
GB2383848B GB2383848B (en) 2004-07-28

Family

ID=11736358

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0303077A Expired - Lifetime GB2383848B (en) 2000-08-16 2000-08-16 Creep life evaluation method

Country Status (5)

Country Link
US (1) US6810748B1 (en)
JP (1) JP4464043B2 (en)
DE (1) DE10085483T1 (en)
GB (1) GB2383848B (en)
WO (1) WO2002014835A1 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3643806B2 (en) * 2001-09-28 2005-04-27 三菱重工業株式会社 High-accuracy creep damage evaluation method
US7168327B2 (en) * 2003-04-28 2007-01-30 Harrell Jr E Ray Method of prediction of in-vivo polymer performance by external experimentation
WO2005124314A1 (en) * 2004-06-21 2005-12-29 The Chugoku Electric Power Co., Inc. Method of evaluating creep life expectancy or life span
JP4054834B2 (en) * 2004-06-21 2008-03-05 中国電力株式会社 Comprehensive evaluation method of creep remaining life
JP4618061B2 (en) * 2005-09-06 2011-01-26 株式会社Ｉｈｉ Creep rupture life evaluation method
US20070276627A1 (en) * 2006-05-25 2007-11-29 Westerman Everett A Repair determination for heat damaged composite structures
US7715991B2 (en) * 2007-05-17 2010-05-11 General Electric Company Systems and methods for monitoring energy system components
JP5090142B2 (en) * 2007-11-28 2012-12-05 ポリプラスチックス株式会社 Prediction method for brittle creep rupture remaining life of molded parts
JP4979563B2 (en) * 2007-12-13 2012-07-18 中国電力株式会社 Creep life evaluation method
GB0821168D0 (en) 2008-11-19 2008-12-24 Univ Nottingham Specimen creep test and methods of using such tests
AU2011253711B2 (en) * 2009-03-19 2012-06-14 Mitsubishi Power, Ltd. Method for assessing remaining lifespan of bolt used at high temperatures
JP4750868B2 (en) * 2009-03-19 2011-08-17 株式会社日立製作所 Remaining life diagnosis method for bolts used at high temperatures
JP4979730B2 (en) * 2009-03-24 2012-07-18 中国電力株式会社 Creep damage evaluation method
JP5492057B2 (en) * 2010-11-18 2014-05-14 バブコック日立株式会社 Damage prediction method for heat-resistant steel welds
JP5931381B2 (en) * 2011-09-13 2016-06-08 三菱日立パワーシステムズ株式会社 Damage evaluation method and maintenance evaluation index formulation method
US20150323432A1 (en) * 2014-05-09 2015-11-12 Balhassn S. M. Ali Pin loaded small one-bar specimen (OBS)
US20150377757A1 (en) * 2014-06-30 2015-12-31 Balhassn S. M. Ali Small Two bar specimen (TBS)
ES2817932T3 (en) * 2014-10-01 2021-04-08 Chugoku Electric Power Remaining Life Estimation Procedure for Estimating Remaining Life of High Chromium Steel Pipe
MX359799B (en) * 2015-01-15 2018-10-10 Mitsubishi Hitachi Power Sys Method for extending life of high-temperature piping and life-extending structure for high-temperature piping.
JP6564231B2 (en) * 2015-04-23 2019-08-21 日立Ｇｅニュークリア・エナジー株式会社 Damage evaluation method for members, creep damage evaluation method, and damage evaluation system
KR102047065B1 (en) 2017-05-19 2019-11-21 중앙대학교 산학협력단 Estimation Apparatus and Method of Creep Crack Rate and Relevant Growth Fracture Parameters for Small Punch Specimen with a Micro Groove
CN112730065B (en) * 2020-12-29 2022-04-26 北京航空航天大学 Method for evaluating creep damage of dissimilar steel welded joint
CN114544349B (en) * 2022-02-25 2024-04-09 中国航空工业集团公司西安飞机设计研究所 Structure and method for testing strength of airtight top plate connection structure of cabin of conveyor
CN116050228B (en) * 2023-03-31 2023-06-20 天津大学 Creep life prediction method for P92 main steam pipeline welded joint

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53125888A (en) * 1977-04-11 1978-11-02 Babcock Hitachi Kk Estimation method of life of reaction tube in chemical equipments
JPH0499945A (en) * 1990-08-20 1992-03-31 Mitsubishi Heavy Ind Ltd Method evaluating high temperature damage of heat resistant steel
JPH04240552A (en) * 1991-01-23 1992-08-27 Nippon Steel Corp Method for evaluating residual life of metal welding member under high temperature stress
JP2000258306A (en) * 1999-03-05 2000-09-22 Chugoku Electric Power Co Inc:The Evaluation technique for creep life by maximum void grain boundary occupation rate method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4875170A (en) * 1986-04-10 1989-10-17 Hitachi, Ltd. Method and apparatus for estimating life expectancy of mechanical structures
GB2208000B (en) * 1987-07-27 1991-07-31 Mitsubishi Heavy Ind Ltd Method of evaluating residual life of heat-resistant steel
US5045283A (en) * 1988-08-02 1991-09-03 Jp Labs Inc. Moving boundary device for monitoring shelf-life of a perishable product
JP3643806B2 (en) * 2001-09-28 2005-04-27 三菱重工業株式会社 High-accuracy creep damage evaluation method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53125888A (en) * 1977-04-11 1978-11-02 Babcock Hitachi Kk Estimation method of life of reaction tube in chemical equipments
JPH0499945A (en) * 1990-08-20 1992-03-31 Mitsubishi Heavy Ind Ltd Method evaluating high temperature damage of heat resistant steel
JPH04240552A (en) * 1991-01-23 1992-08-27 Nippon Steel Corp Method for evaluating residual life of metal welding member under high temperature stress
JP2000258306A (en) * 1999-03-05 2000-09-22 Chugoku Electric Power Co Inc:The Evaluation technique for creep life by maximum void grain boundary occupation rate method

Also Published As

Publication number Publication date
WO2002014835A1 (en) 2002-02-21
GB0303077D0 (en) 2003-03-19
JP4464043B2 (en) 2010-05-19
US6810748B1 (en) 2004-11-02
GB2383848B (en) 2004-07-28
DE10085483T1 (en) 2003-07-10

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20200815